Welding equipment and welding method

Abstract

The invention discloses welding equipment and a welding method.The welding equipment comprises a positioning and clamping device, a welding device and a discharging device, the positioning and clamping device can move between a material receiving position and a welding position, and the positioning and clamping device is used for fixing a workpiece; the welding device is used for welding workpieces at the welding position; the discharging device can transfer workpieces between a welding position and a discharging position, and the discharging device comprises a first action, a second action and a third action. The blanking device is configured to separate a workpiece subjected to primary welding from the positioning and clamping device in the first action; in the second action, the workpiece subjected to primary welding is fixed at the welding position, so that the welding device welds the workpiece for the second time; in the third action, the workpiece subjected to secondary welding is transferred to a discharging position; the positioning and clamping device is configured to move from the welding position to the material receiving position after being separated from a workpiece subjected to primary welding; during the second action, the non-welded workpieces are received at the material receiving position; and in the third action, the unwelded workpieces are transferred to the welding position, so that the welding device welds the workpieces at a time.

Description

Technical Field

[0001] The invention relates to the field of welding, and in particular to welding equipment and a welding method. Background Art

[0002] Automobiles include base plates and patch plates. Patch plates are mainly used in scenarios where local reinforcement or different performance requirements are required in automobile manufacturing. Through technologies such as thermoforming and welded plate thermoforming, base plates and patch plates can significantly improve the structural strength and safety performance of automobiles, while optimizing the use of materials and reducing manufacturing costs.

[0003] In the related art, the substrate and the patch plate are still welded manually or with semi-automatic equipment, which results in low welding efficiency and reduces production efficiency. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a welding device that can realize automatic welding and improve production efficiency.

[0005] A welding method is also proposed.

[0006] A welding device according to a first embodiment of the present invention comprises: A positioning clamping device, which can move between a material receiving position and a welding position, and is used to position and clamp a workpiece; A welding device, used for welding the workpiece at the welding position; A material unloading device, capable of transferring the workpiece between the welding position and the material unloading position, the material unloading device comprising a first action, a second action and a third action; The unloading device is configured to: when performing the first action, separate the workpiece welded once and the positioning clamping device; when performing the second action, fix the workpiece welded once at the welding position so that the welding device welds the workpiece a second time; when performing the third action, transfer the workpiece welded a second time to the unloading position; Wherein, the positioning and clamping device is configured to: move from the welding position to the receiving position after being separated from the workpiece welded once; receive the unwelded workpiece at the receiving position when the unloading device performs the second action; and transfer the unwelded workpiece to the welding position when the unloading device performs the third action, so that the welding device can weld the workpiece once.

[0007] The welding device according to the first embodiment of the present invention has at least the following beneficial effects: 1. Fix the workpiece welded once by the unloading device for secondary welding. While the workpiece welded once is being welded twice, the positioning clamping device re-receives the new workpiece at the receiving position, so that the secondary welding and the conveying of the new workpiece are carried out at the same time, thereby improving the production cycle, reducing the total production cycle of multiple workpieces, and improving production efficiency; 2. Moreover, after the secondary welding of the workpiece is completed, the unloading device directly transfers the workpiece after the secondary welding, and the positioning clamping device conveys the new unwelded workpiece to the welding position. The welding device can weld continuously, shortening the waiting time of the welding device, thereby improving the production rhythm, reducing the total production cycle of multiple workpieces, and improving production efficiency.

[0008] According to some embodiments of the present invention, the welding device comprises: A welding clamp capable of moving along a first direction and capable of welding the workpiece at the welding position; A first welding moving assembly is transmission-connected to the welding clamp and is capable of driving the welding clamp to move along a second direction, wherein the second direction is perpendicular to the first direction; The second welding movable assembly is transmission-connected to the first welding movable assembly and is capable of driving the first welding movable assembly to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0009] According to some embodiments of the present invention, the welding device comprises a welding tongs, wherein the welding tongs comprises: frame; A first movable arm having a first welding head; A first driving assembly is connected to the frame and is drivingly connected to the first moving arm, and the first driving assembly is used to drive the first moving arm to move along a first direction; A second movable arm has a second welding head, the second welding head is arranged opposite to and spaced from the first welding head along the first direction, and can cooperate with the first welding head to weld the workpiece; The second driving assembly is connected to the frame and is drivingly connected to the second movable arm. The second driving assembly is used to drive the second movable arm to move along the first direction.

[0010] According to some embodiments of the present invention, at least one of the welding tongs is extended along the second direction, and / or at least one of the welding tongs is extended along a fourth direction, the second direction and the third direction form a second-third plane, the fourth direction is parallel to the second-third plane, and the fourth direction is arranged at an angle to the second direction.

[0011] According to some embodiments of the present invention, the welding device further comprises: A loading device capable of transferring the workpiece at the loading position to the centering position, and capable of transferring the workpiece at the centering position to the positioning clamping device at the receiving position; A centering device is used to center the workpiece at the centering position.

[0012] According to some embodiments of the present invention, the centering device comprises: The centering table includes a bearing surface, a first centering surface and a second centering surface arranged on the bearing surface, the first centering surface and the second centering surface are arranged at an angle, and a centering corner facing the ground is formed therebetween, the bearing surface and the centering corner are used to jointly bear the workpiece, wherein the centering corner is also used to align the corners of the workpiece.

[0013] According to some embodiments of the present invention, the positioning clamping device comprises: Fixed seat; A clamping assembly, connected to the fixing seat, for clamping and fixing the workpiece; The first fixed moving component is transmission-connected to the fixed seat and can drive the fixed seat to move between the material receiving position and the welding position.

[0014] According to some embodiments of the present invention, the clamping assembly includes a plurality of clamping members, which together form a clamping position for clamping and fixing the workpiece, and the clamping members are used to clamp the workpiece along a first direction so that the welding device welds the workpiece along the first direction, and at least one of the clamping members is capable of moving within a projection plane perpendicular to the first direction to change the size of the clamping position within the projection plane.

[0015] According to some embodiments of the present invention, the clamping assembly includes a plurality of clamping members, the clamping members are used to clamp the workpiece along a first direction so that the welding device welds the workpiece along the first direction, the clamping member includes a main body, a fixed clamping portion and a rotating clamping portion, the main body is connected to the fixed seat, the fixed clamping portion is connected to an end of the main body away from the fixed seat, the rotating clamping portion is rotatably connected to the main body, and the rotating clamping portion has a first position and a second position; Wherein, the rotating clamping part is configured as follows: in the first position, it is located on one side of the fixed clamping part, and the fixed clamping part carries the workpiece along the first direction; in the second position, it rotates to be opposite to the fixed clamping part and jointly clamps the workpiece.

[0016] The welding method according to the second aspect of the present invention comprises: S1: The positioning and clamping device positions and clamps the workpiece at the welding position, and the welding assembly welds the workpiece at the welding position once; S2: After the workpiece is welded once, the unloading device separates the welded workpiece from the positioning and clamping device, and after the workpiece is separated from the positioning and clamping device, the positioning and clamping device moves to the material receiving position; S3: the positioning and clamping device receives the unwelded workpiece at the receiving position, the unloading device fixes the workpiece welded once, and the welding assembly performs secondary welding on the workpiece fixed by the unloading device; S4: After the workpiece is welded for the second time, the unloading device transfers the workpiece welded for the second time to the unloading position, and the positioning and clamping device transfers the unwelded workpiece to the welding position; S5: Repeat steps S1 to S4.

[0017] The welding method according to the second aspect of the present invention has at least the following beneficial effects: 1. The unloading device positions and clamps the workpiece for secondary welding, and at the same time positions and clamps the new workpiece. The secondary welding and the new workpiece loading process are carried out simultaneously, which improves the production rhythm, reduces the total production cycle of multiple workpieces, and improves production efficiency; 2. After the secondary welding of the workpiece, the unloading device directly transfers the workpiece after the secondary welding, and the positioning clamping device conveys the new workpiece to the welding position. The welding device can weld continuously, shortening the waiting time of the welding device, thereby improving the production cycle, reducing the total production cycle of multiple workpieces, and improving production efficiency.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a structural schematic diagram of a material unloading device in a welding device according to an embodiment of the present invention performing the first action; Figure 2 It is a structural schematic diagram of a material unloading device in a welding device according to an embodiment of the present invention performing the second action; Figure 3 It is a structural schematic diagram of a material unloading device in a welding device according to an embodiment of the present invention performing the third action; Figure 4 It is a structural schematic diagram of a clamping assembly and a clamping moving assembly in a positioning clamping device in a welding device according to an embodiment of the present invention; Figure 5 A schematic structural diagram of a welding clamp in a welding device according to an embodiment of the present invention from a first viewing angle; Figure 6A schematic structural diagram of a welding clamp in a welding device according to an embodiment of the present invention from a second viewing angle; Figure 7 The figure is a schematic structural diagram of a centering device in a welding device according to an embodiment of the present invention.

[0020] Figure Number: Material receiving position 10; welding position 20; material unloading position 30; material loading position 40; centering position 50; Positioning clamping device 100; A fixing seat 110; Clamping assembly 120; clamping member 121; main body 1211; fixed clamping portion 1212; rotating clamping portion 1213; A first fixed moving assembly 130; Clamping moving component 140; first clamping moving member 141; second clamping moving member 142; Welding device 200; Welding tongs 210; Frame 211; first moving arm 212; first welding head 2121; first driving assembly 213; second moving arm 214; second welding head 2141; second driving assembly 215; A first welding moving assembly 220; a second welding moving assembly 230; Feeding device 300; Feeding device 400; Centering device 500 ; supporting plate 510 ; first centering plate 520 ; second centering plate 530 . DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, "a number" refers to one or more than one, and "a plurality" refers to two or more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0025] In the related art, the substrate and the patch plate are stacked according to a preset position, and the welding equipment welds the stacked position of the substrate and the patch plate. During the welding process, the substrate and the patch plate are clamped and fixed to avoid misalignment of the two during the welding process. Inevitably, the clamped parts of the substrate and the patch plate cannot be welded, resulting in the need to repair the clamping position of the substrate and the patch plate after one welding. Generally speaking, after one welding, the substrate and the patch plate are clamped and repaired at a position that is staggered from the first welding position. During one welding and repair welding process, the welding duration is long, resulting in a long production cycle and low overall production efficiency. And after the welding of the substrate and the patch plate is completed and transferred, the clamping device that clamps the substrate and the patch plate can re-accept the new workpiece. The welding equipment needs to wait for the clamping device to carry the workpiece. The waiting time of the welding equipment is long, resulting in a long production cycle and low overall production efficiency.

[0026] Reference Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the first aspect of the present invention provides a welding device, including: a positioning and clamping device 100, a welding device 200 and a feeding device 300.

[0027] In this embodiment, the positioning clamping device 100 can move between the material receiving position 10 and the welding position 20, and the positioning clamping device 100 is used to position and clamp the workpiece. Specifically, the material receiving position 10 and the welding position 20 are fixed positions relative to the ground, wherein the material receiving position 10 means: the positioning clamping device 100 can independently receive the workpiece, such as the position of receiving the substrate and the patch plate, and the positioning clamping device 100 will not interfere with the movement of other equipment during the receiving process; the welding position 20 means: the position where the welding device 200 can smoothly weld the workpiece fixed by the positioning clamping device 100, and during the welding process, the movement of the welding device 200 will not interfere with the movement of other equipment. Moreover, in order to reduce the time for the positioning clamping device 100 to move between the material receiving position 10 and the welding position 20, the material receiving position 10 and the welding position 20 should be as close as possible under the premise that all equipment will not interfere. The moving track of the positioning clamping device 100 between the material receiving position 10 and the welding position 20 can be a straight line, an arc or other track lines. In this embodiment, the moving track of the positioning clamping device 100 is a straight line.

[0028] The welding device 200 is used to weld the workpiece at the welding position 20; there are various welding types, and the corresponding welding device 200 can be selected according to the designed welding type, such as fusion welding, pressure welding, brazing, etc., specifically resistance welding, arc welding, laser welding, etc. In this embodiment, the substrate and the patch plate stacking area are welded by resistance butt welding, so that the substrate and the patch plate are hot-melt connected. Compared with the method of welding in the gap at the edge of the stacking contour of the substrate and the patch plate, the connection strength directly connected in the stacking area is higher.

[0029] The unloading device 300 can transfer the workpiece between the welding position 20 and the unloading position 30 to complete the unloading of the workpiece and can also assist the workpiece in secondary welding, that is, repair welding of the workpiece. Specifically, the unloading device 300 includes a first action, a second action and a third action, wherein the unloading device 300 is configured as follows: like Figure 1 As shown, when the unloading device 300 performs the first action, the unloading device 300 will actively separate the workpiece welded once and the positioning clamping device 100, so that the positioning clamping device 100 can move arbitrarily without interfering with the workpiece welded once and the unloading device 300, and the positioning clamping device 100 moves to the receiving position 10.

[0030] like Figure 2As shown, when the unloading device 300 performs the second action, the unloading device 300 fixes the workpiece welded once at the welding position 20, so that the welding device 200 welds the workpiece for the second time. Secondary welding means: during the first welding, the positioning clamping device 100 clamps the fixed position of the workpiece for repair welding. Since the first welding and repair welding are not performed at the same time, repair welding is called secondary welding. The unloading device 300 replaces the positioning clamping device 100 to fix the workpiece welded once, and the fixing position is staggered with the position that needs secondary welding, which is convenient for the secondary welding of the workpiece. The positioning clamping device 100 simultaneously receives a new unwelded workpiece at the receiving position 10.

[0031] like Figure 3 As shown, when the unloading device 300 performs the third action, the unloading device 300 transfers the workpiece to be welded for the second time to the unloading position 30. After the workpiece is welded for the second time, the welding of the substrate and the patch plate is completed, and the unloading device 300 directly transfers the fixed workpiece to the unloading position 30 to complete the unloading of the workpiece, and waits for the first welding of the new workpiece to be completed, and then repeats the first action, the second action and the third action. The positioning clamping device 100 simultaneously fixes the new unwelded workpiece at the welding position 20 for the welding device 200 to perform welding.

[0032] The positioning clamping device 100 is configured as follows: after being separated from the workpiece welded once, the positioning clamping device 100 moves from the welding position 20 to the material receiving position 10; when the unloading device 300 performs the second action, the unloading device 300 fixes the workpiece welded once for secondary welding, and while the workpiece welded once is being welded twice, the positioning clamping device 100 receives the unwelded workpiece at the material receiving position 10, so that the secondary welding and the conveying of the new workpiece are carried out simultaneously, thereby improving the production cycle, reducing the total production cycle of multiple workpieces, and improving production efficiency; After the secondary welding of the workpiece is completed, the unloading device 300 performs the third action. The unloading device 300 directly transfers the workpiece after the secondary welding. The positioning and clamping device 100 transfers the new unwelded workpiece to the welding position 20, so that the welding device 200 welds the workpiece once. The welding device 200 can quickly perform the primary welding of the next workpiece after the secondary welding of the previous workpiece. The welding device 200 continuously welds, shortening the waiting time of the welding device 200, thereby improving the production rhythm, reducing the total production cycle of multiple workpieces, and improving production efficiency.

[0033] In addition, the welding position 20 where the workpiece fixed by the positioning clamping device 100 is located and the welding position 20 where the workpiece fixed by the unloading device 300 is located are in the same position in the coordinate system established by the same reference, so that the distance moved by the welding device 200 relative to the welding position 20 is basically the same, and the movement control of the welding device 200 is more convenient. The premise for the unloading device 300 to move the workpiece to be welded once to the welding position 20 is that the positioning clamping device 100 basically leaves the welding position 20, and the unloading device 300 can move the workpiece to be welded once to the welding position 20 without interfering with the positioning clamping device 100. As another embodiment, the welding position 20 corresponding to the positioning clamping device 100 and the welding position 20 corresponding to the unloading device 300 may also be in different positions in the coordinate system established by the same reference. For example, along the vertical direction perpendicular to the ground, the welding position 20 corresponding to the unloading device 300 is located above the welding position 20 corresponding to the positioning clamping device 100, and will not interfere with the movement of the positioning clamping device 100. The welding device 200 actively moves to different welding positions 20 for welding, and the positioning clamping device 100 may also move at the same time.

[0034] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some specific embodiments of the present invention, the welding device 200 includes: a welding clamp 210 , a first welding moving assembly 220 and a second welding moving assembly 230 .

[0035] In this embodiment, the welding clamp 210 can move along a first direction and can weld the workpiece at the welding position 20. In this embodiment, the first direction is a vertical direction perpendicular to the ground, and the substrate and the patch plate are placed horizontally. The welding clamp 210 clamps and welds the substrate and the patch piece at the upper and lower sides of the substrate and the patch plate.

[0036] The first welding moving assembly 220 is connected to the welding clamp 210 by transmission, and can drive the welding clamp 210 to move in a second direction, and the second direction is perpendicular to the first direction. In this embodiment, the first welding moving assembly 220 drives the welding clamp 210 to move in the second direction, so that the welding clamp 210 can move toward the welding position 20 or away from the welding position 20. When the welding clamp 210 moves toward the welding position 20 and moves to the upper and lower sides of the substrate and the patch plate, the welding clamp 210 performs resistance welding. When the welding clamp 210 is away from the welding position 20 and completely detaches from the substrate and the patch plate, and does not interfere with the positioning clamping device 100 and the unloading device 300, it is convenient to transfer the substrate and the patch plate. The first welding moving assembly 220 is used to drive the welding clamp 210 to move linearly, and its specific linear transmission method can be: a screw transmission structure, a linear motor transmission structure, etc. In this embodiment, a screw transmission structure is adopted, and the driving source in the screw transmission structure is a servo driving source, such as a servo motor. The servo driving source can effectively control the changes in the moving position, speed, acceleration and other quantities of the welding clamp 210, thereby reducing the time spent by the welding clamp 210 in the moving process, and the movement of the welding clamp 210 is more efficient.

[0037] The second welding moving assembly 230 is connected to the first welding moving assembly 220 by transmission, and can drive the first welding moving assembly 220 to move along a third direction, which is perpendicular to the first direction and the second direction. In this embodiment, the third direction is perpendicular to the second direction, and the third direction is in the same direction as the moving direction of the positioning clamping device 100, wherein the second welding moving assembly 230 is used to drive the welding clamp 210 to move linearly, and its specific linear transmission mode is the same as the linear transmission mode of the first welding moving assembly 220, which will not be described in detail here. As another embodiment, the linear transmission mode of the second welding moving assembly 230 can also be different from the linear transmission mode of the first welding moving assembly 220, for example, a linear motor is used for transmission.

[0038] It is worth understanding that the welding clamp 210 moves in a plane perpendicular to the first direction through the first welding moving component 220 and the second welding moving component 230. The first direction is the direction perpendicular to the ground, and the plane perpendicular to the first direction is the horizontal plane. The substrate and the patch plate are placed horizontally and stacked along the first direction. The welding clamp 210 can move in the horizontal plane to any stacking position of the substrate and the patch plate, and perform welding at this position, so that the substrate and the patch plate are welded as one.

[0039] Reference Figure 5 and Figure 6As shown, in some specific embodiments of the present invention, the welding device 200 includes: welding clamp 210, and the welding clamp 210 includes: a frame 211, a first moving arm 212, a first driving assembly 213, a second moving arm 214, and a second driving assembly 215. Among them, the first driving assembly 213 is connected to the first moving arm 212 by transmission, and the second driving assembly 215 is connected to the second moving arm 214 by transmission. The first moving arm 212 and the second moving arm 214 can move independently, thereby improving the moving efficiency, thereby improving the production cycle and production efficiency.

[0040] In this embodiment, the frame 211 is a support member for supporting the remaining structures. The frame 211 is box-shaped and has an installation chamber inside the frame 211. The first drive assembly 213 and the second drive assembly 215 are installed in the installation chamber and hidden by the frame 211, so that the welding clamp 210 has a more beautiful appearance as a whole. Specifically, the frame 211 includes a rectangular frame and a frame plate connected to the frame, wherein the first drive assembly is connected and the second drive assembly 215 is connected to the frame or the frame plate, wherein a frame plate located on the side of the frame 211 has an avoidance hole for the first moving arm 212 and the second moving arm 214 to extend out of the frame 211 and avoid the moving range of the first moving arm 212 and the second moving arm 214 along the first direction, so that the first moving arm 212 and the second moving arm 214 can move smoothly along the first direction. As another embodiment, the frame 211 can also be cylindrical or other shapes. In this regard, the present invention does not limit the specific shape of the frame 211.

[0041] Part of the first moving arm 212 is located inside the frame 211 to be connected to the first driving assembly 213 by transmission, and the other part of the first moving arm 212 extends outside the frame 211 for welding. Specifically, the first moving arm 212 extends out of the frame 211 and has a first welding head 2121 at one end away from the frame 211. The first welding head 2121 extends along the first direction toward the side where the second moving arm 214 is located. The first welding head 2121 can also be located at other positions of the extended part of the first moving arm 212, for example, the first welding head 2121 is located in the middle of the extended part of the first moving arm 212 or between the middle and the end of the extended part of the first moving arm 212. The first direction is a vertical direction perpendicular to the ground, and the first welding head 2121 can be in the same direction as the first direction, or can be set at an angle to the first direction, that is, the first welding head 2121 is inclined toward the second moving arm 214. The first direction can also be other directions set at an angle to the ground.

[0042] The first driving assembly 213 is connected to the frame 211 , disposed in the installation chamber, and is drivingly connected to the first moving arm 212 in the installation chamber. The first driving assembly 213 is used to drive the first moving arm 212 to move along a first direction.

[0043] Part of the second movable arm 214 is located inside the frame 211 to be transmission-connected with the second driving assembly 215, and another part of the second movable arm 214 extends outside the frame 211 for welding, wherein the second movable arm 214 extends out of the frame 211 and has a second welding head 2141 at one end away from the frame 211, and the second welding head 2141 extends along the first direction toward the side where the first movable arm 212 is located. The second welding head 2141 may also be located at other positions of the extended portion of the second movable arm 214, for example, the second welding head 2141 is located in the middle of the extended portion of the second movable arm 214 or between the middle and the end of the extended portion of the second movable arm 214. The first direction is a vertical direction perpendicular to the ground, and the second welding head 2141 may be in the same direction as the first direction, or may be arranged at an angle to the first direction, that is, the second welding head 2141 is inclined toward the first movable arm 212.

[0044] The second welding head 2141 is arranged opposite to the first welding head 2121 along the first direction and at intervals, and the axes of the first welding head 2121 and the second welding head 2141 are located on the same straight line, or the axes of the two are arranged at an angle. The second welding head 2141 can cooperate with the first welding head 2121 to weld at least two objects to be welded, so that the objects to be welded are welded together. For example, the first welding head 2121 contacts the top surface of the patch plate, and the second welding head 2141 contacts the bottom surface of the substrate. A large current is passed, and the large current passes through the first welding head 2121, the patch plate, the substrate, and the second welding head 2141 in sequence. The current direction can also be along the direction from the second welding head 2141 to the first welding head 2121. The resistance between the substrate and the patch plate is large. When the current passes, a large amount of heat is generated, so that the substrate and the patch plate are heat-melted and welded together at the contact position. In this embodiment, the first welding head 2121 and the second welding head 2141 are both cylindrical.

[0045] The second driving assembly 215 is connected to the frame 211 , disposed in the installation chamber, and is transmission-connected to the second moving arm 214 in the installation chamber. The second driving assembly 215 is used to drive the second moving arm 214 to move along the first direction.

[0046] It is worth understanding that the first movable arm 212 and the second movable arm 214 are driven respectively by the first driving component 213 and the second driving component 215, and the movements of the first movable arm 212 and the second movable arm 214 do not interfere with each other, so that after the first welding head 2121 and the second welding head 2141 weld the object to be welded, the first movable arm 212 and the second movable arm 214 can simultaneously move away from the object to be welded and promptly remove the object to be welded, thereby improving the transportation rate of the object to be welded, thereby improving the production cycle and production efficiency.

[0047] In addition, the first movable arm 212 and / or the second movable arm 214 has a strain sensor. When the first welding head 2121 or the second welding head 2141 contacts the substrate, the strain sensor detects stress changes, and then determines whether the first movable arm 212 and the second movable arm 214 are in place with the substrate and the patch plate.

[0048] Reference Figure 1 As shown, in some specific embodiments of the present invention, at least one welding clamp 210 is extended along the second direction, and / or at least one welding clamp 210 is extended along the fourth direction, the second direction and the third direction form a second-third plane, the fourth direction is parallel to the second-third plane, and the fourth direction is set at an angle to the second direction.

[0049] In this embodiment, there are three welding clamps 210, and the three welding clamps 210 are arranged in sequence along the third direction. The substrate and the patch plate are divided into three areas in sequence along the third direction. The three welding clamps 210 weld the three areas respectively, and the three welding clamps 210 weld synchronously, which greatly improves the welding efficiency and thus improves the production efficiency.

[0050] It should be noted that the welding clamp 210 itself is relatively large in size, and the welding clamp 210 needs to move within a certain space to be able to weld within the welding area. In the process of simultaneous welding with multiple welding clamps 210, each welding clamp 210 needs a certain amount of space to move. In the process of dividing the welding area along the third direction according to the volume of the welding clamp 210, there is a great probability that the size of the last welding area is smaller than the welding area corresponding to the volume of the welding clamp 210. If the last welding area is merged with the previous welding area, the corresponding welding area will increase, resulting in an increase in welding time, thereby reducing the production cycle and reducing production efficiency. If a separate welding clamp 210 is used for welding in the last welding area, the separate welding clamp 210 will easily hinder the movement of adjacent welding clamps 210, resulting in the two welding clamps 210 being unable to weld normally, thereby reducing welding efficiency.

[0051] Therefore, in this embodiment, the first two welding clamps 210 of the three welding clamps 210 distributed in sequence along the third direction are further extended along the second direction, and the last welding clamp 210 is extended along the fourth direction. For the convenience of distinction, the first two welding clamps 210 are parallel welding clamps 210, and the last welding clamp 210 is an inclined welding clamp 210. The inclined welding clamp 210 is set at an angle to the parallel welding clamp 210 along the fourth direction and is inclined toward the parallel welding clamp 210, so that the welding position 20 of the inclined welding clamp 210 is closer to the welding position 20 of the parallel welding clamp 210, and it is easier to weld near the welding area of ​​the parallel welding clamp 210. At the same time, the inclined welding clamp 210 and the parallel welding clamp 210 do not interfere with each other, thereby facilitating welding of the last welding area and improving welding efficiency.

[0052] Reference Figure 1 As shown, in some embodiments of the present invention, the welding equipment also includes: a loading device 400 and a centering device 500, the loading device 400 can transfer the workpiece at the loading position 40 to the centering position 50, and can transfer the workpiece at the centering position 50 to the positioning and clamping device 100 at the receiving position 10; the centering device 500 is used to center the workpiece at the centering position 50.

[0053] It is worth understanding that during the loading process, the loading device 400 centers the workpiece through the centering device 500, so that the relative position accuracy between the workpiece and the loading device 400 is higher. When the loading device 400 is transferred to the receiving position 10, the loading accuracy of the loading device 400 is higher, and the workpiece can be accurately placed on the positioning and clamping device 100 and positioned and clamped by the positioning and clamping device 100.

[0054] In this embodiment, the loading device 400 is a robotic arm, and the hand of the robotic arm is provided with a loading fixture, which is a negative pressure adsorption member, and the workpiece is fixed by negative pressure. As another embodiment, the loading fixture can also be a clamp. Among them, the loading device 400 has two loading fixtures, one loading fixture is used to fix the substrate, and the other loading fixture is used to fix the patch plate. The loading device 400 can place the substrate and the patch plate on the positioning clamping device 100 of the receiving position 10 in sequence for the welding device 200 to perform welding. In addition, the unloading device 300 is also a robotic arm, and the hand of the robotic arm is provided with a unloading fixture, which is a negative pressure adsorption member or a clamp to fix the workpiece for the first welding and the workpiece after the second welding.

[0055] In addition, it should be noted that when the centering device 500 is not set, the loading device 400 has high requirements on the placement accuracy of the workpieces at the loading position 40, and the workpieces are generally transported by a forklift. In other words, the workers need to use a forklift to place the workpieces with high precision, which places high technical requirements on the workers, and the workers' loading efficiency is low, which reduces production efficiency.

[0056] After setting up the centering device 500, the relative position accuracy between the workpiece and the loading device 400 is improved through the centering device 500, thereby reducing the placement requirements of the workpiece at the loading position 40, reducing the placement accuracy of the workpiece when the worker operates the forklift to place the workpiece, reducing the work intensity of the worker, and improving the loading efficiency.

[0057] The loading position 40 may specifically be a shelf, and the workpiece is placed on the shelf via a forklift pallet for transfer by the loading device 400 .

[0058] In addition, the loading device 400 can take the workpiece at the loading position 40 and center it at the centering position 50 while the positioning and clamping device 100 is fixing the workpiece for welding. After the centering is completed, wait for the positioning and clamping device 100 to move to the receiving position 10, and then load the workpiece to the positioning and clamping device 100; if the positioning and clamping device 100 is already at the receiving position 10, the workpiece can also be loaded directly after it is centered.

[0059] Reference Figure 7 As shown, in some specific embodiments of the present invention, the centering device 500 includes a centering platform.

[0060] In this embodiment, the centering platform includes a bearing plate 510, a first centering plate 520 and a second centering plate 530. The bearing plate 510 is tilted relative to the ground. The surface of the bearing plate 510 that is tilted upward is the bearing surface. The workpiece can be directly placed on the bearing surface and supported by the bearing surface. Of course, because the bearing surface is tilted, the workpiece will slide along the bearing surface under the action of gravity. The first centering plate 520 and the second centering plate 530 are both arranged on the bearing surface. The first centering plate 520 and the second centering plate 530 are both located on the bearing surface. The surface is close to the ground, and the first centering plate 520 and the second centering plate 530 are set at an angle. The surfaces formed by the angle between the first centering plate 520 and the second centering plate 530 are respectively the first centering surface and the second centering surface. The first centering surface and the second centering surface form a centering corner facing the ground. When the workpiece slides along the bearing surface, the corner of the workpiece will abut against the centering corner under the action of gravity, and the centering corner supports the workpiece. The workpiece is centered through the centering corner, thereby improving the relative position accuracy of the workpiece and the loading device 400.

[0061] The centering device 500 also includes a support column, and the number of centering platforms is two. The two centering platforms are arranged on opposite sides of the support column and are both connected to the support column to achieve synchronous centering of multiple workpieces and improve production efficiency.

[0062] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some specific embodiments of the present invention, the positioning and clamping device 100 includes: a fixed base 110, a clamping assembly 120 and a first fixed and movable assembly 130.

[0063] In this embodiment, the fixing seat 110 is a rectangular seat, or may be cylindrical or other shapes, and the present invention does not limit the specific shape of the fixing seat 110. The fixing seat 110 is used to carry the clamping assembly 120.

[0064] The clamping assembly 120 is connected to the top surface of the fixing seat 110, and is used to clamp and fix the workpiece. Specifically, the workpiece is a stacked substrate and a patch plate, and the clamping assembly 120 at least clamps the overlapping portion of the substrate and the patch plate.

[0065] The first fixed moving assembly 130 is connected to the bottom surface of the fixed seat 110 by transmission, and can drive the fixed seat 110 to move between the material receiving position 10 and the welding position 20. The first fixed moving assembly 130 is a linear moving assembly, which can be a transmission structure capable of moving along a straight line, such as a screw transmission structure, a linear motor transmission structure, etc. The first fixed moving assembly 130 drives the fixed seat 110 to move along the third direction.

[0066] Reference Figure 1 , Figure 2 and Figure 3 In some specific embodiments of the present invention, the clamping assembly 120 includes a plurality of clamping members 121, which together form a clamping position for clamping and fixing the workpiece. The clamping member 121 is used to clamp the workpiece along a first direction so that the welding device 200 welds the workpiece along the first direction. At least one clamping member 121 can move in a projection plane perpendicular to the first direction to change the size of the clamping position in the projection plane.

[0067] It is worth understanding that the clamping member 121 can adjust its position within the projection plane so that a plurality of clamping members 121 can be combined to form clamping positions of different shapes to adapt to workpieces of different shapes. The welding equipment can be applied to more types of workpieces and has a wider range of applications.

[0068] In the present embodiment, each clamping member 121 is connected to the top surface of the fixed seat 110 through a clamping moving assembly 140, and the clamping moving assembly 140 is used to drive the clamping member 121 to move in the projection plane. Specifically, the clamping moving assembly 140 includes a first clamping moving member 141 and a second clamping moving member 142. The first clamping moving member 141 is transmission-connected to the clamping member 121 and is used to drive the clamping member 121 to move along the second direction. The second clamping moving member 142 is arranged on the top surface of the fixed seat 110 and is transmission-connected to the first clamping moving member 141 to drive the first clamping moving member 141 and the clamping member 121 to move along the third direction. Among them, the first clamping moving member 141 and the second clamping moving member 142 can both be screw transmission structures, and the moving position, moving speed and moving acceleration are controlled by a servo drive source, such as a servo motor.

[0069] Reference Figure 4As shown, in some specific embodiments of the present invention, the clamping assembly 120 includes a plurality of clamping members 121, the clamping members 121 are used to clamp the workpiece along a first direction so that the welding device 200 welds the workpiece along the first direction, the clamping member 121 includes a main body 1211, a fixed clamping member 1212 and a rotating clamping member 1213, the main body 1211 is connected to the fixed seat 110, the fixed clamping member 1212 is connected to one end of the main body 1211 away from the fixed seat 110, the rotating clamping member 1213 is rotatably connected to the main body 1211, and the rotating clamping member 1213 has a first position and a second position; wherein the rotating clamping member 1213 is configured as follows: in the first position, it is located on one side of the fixed clamping member 1212, and the fixed clamping member 1212 carries the workpiece along the first direction; in the second position, it rotates to be opposite to the fixed clamping member 1212 and clamps the workpiece together.

[0070] It is worth understanding that the clamping member 121 clamps the workpiece by means of the rotating clamping portion 1213 and the fixed clamping portion 1212 , and at the same time, it is easy to remove the workpiece, making it more convenient to use.

[0071] In this embodiment, the main body 1211 is in the shape of a rod to increase the distance between the clamping position and the top surface of the fixed seat 110, so that part of the welding clamp 210 can enter the space between the workpiece and the top surface of the fixed seat 110 to weld the bottom surface of the workpiece. The fixed clamping part 1212 is arranged at the top of the main body 1211 to support the workpiece. When the rotating clamping part 1213 is in the first position, the rotating clamping part 1213 is staggered from the top surface of the fixed clamping part 1212, so that there is no obstruction in the space above the fixed clamping part 1212, and the workpiece can be placed on the top surface of the fixed clamping part 1212 along the first direction, or taken away from the top surface of the fixed clamping part 1212, so as to realize the transfer of the workpiece.

[0072] In some specific embodiments of the present invention, the welding method according to the second aspect of the present invention includes: S1: The positioning and clamping device 100 positions and clamps the workpiece at the welding position 20, and the welding assembly welds the workpiece once at the welding position 20.

[0073] S2: After the workpiece is welded once, the unloading device 300 separates the welded workpiece from the positioning and clamping device 100 . After the workpiece is separated from the positioning and clamping device 100 , the positioning and clamping device 100 moves to the receiving position 10 .

[0074] S3: The positioning clamping device 100 receives the unwelded workpiece at the receiving position 10, the unloading device 300 fixes the workpiece welded once, and the welding assembly performs secondary welding on the workpiece fixed by the unloading device 300.

[0075] Among them, the positioning clamping device 100 re-loads the new unwelded workpiece, and at the same time, the unloading device 300 fixes the workpiece that has been welded once for secondary welding. The loading of the new workpiece and the secondary welding of the old workpiece are carried out simultaneously, and the production rhythm of the two is synchronized, which saves production time and improves production efficiency.

[0076] S4: After the workpiece is welded for the second time, the unloading device 300 transfers the workpiece welded for the second time to the unloading position 30 , and the positioning and clamping device 100 transfers the unwelded workpiece to the welding position 20 .

[0077] Among them, after the secondary welding of the workpiece, the unloading device 300 directly transfers the workpiece after the secondary welding. At the same time, the positioning and clamping device 100 conveys the new workpiece to the welding position 20. The unloading of the secondary welded workpiece and the transfer of the new workpiece are carried out synchronously. The welding device 200 can continuously weld, shortening the waiting time of the welding device 200, thereby improving the production rhythm, reducing the total production cycle of multiple workpieces, and improving production efficiency.

[0078] S5: Repeat steps S1 to S4 to produce multiple workpieces, thereby achieving continuous production of multiple workpieces, improving the production cycle of the workpieces, reducing the production cycle of each workpiece, and improving the overall production efficiency of the multiple workpieces.

[0079] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A welding device, characterized in that: include: A positioning clamping device (100) capable of moving between a material receiving position (10) and a welding position (20), the positioning clamping device (100) being used to position and clamp a workpiece; A welding device (200) used for welding the workpiece at the welding position (20); A material unloading device (300) capable of transferring the workpiece between the welding position (20) and the material unloading position (30), the material unloading device (300) comprising a first action, a second action and a third action; The unloading device (300) is configured to: when performing the first action, separate the workpiece welded once and the positioning clamping device (100); when performing the second action, fix the workpiece welded once at the welding position (20) so that the welding device (200) welds the workpiece a second time; and when performing the third action, transfer the workpiece welded a second time to the unloading position (30); The positioning and clamping device (100) is configured to: after being separated from the workpiece welded once, move from the welding position (20) to the receiving position (10); when the unloading device (300) performs the second action, receive the unwelded workpiece at the receiving position (10); and when the unloading device (300) performs the third action, transfer the unwelded workpiece to the welding position (20), so that the welding device (200) welds the workpiece once.

2. The welding device according to claim 1, characterized in that The welding device (200) comprises: A welding clamp (210) capable of moving along a first direction and capable of welding the workpiece at the welding position (20); A first welding moving assembly (220) is drivingly connected to the welding clamp (210) and is capable of driving the welding clamp (210) to move along a second direction, the second direction being perpendicular to the first direction; The second welding movable assembly (230) is transmission-connected to the first welding movable assembly (220), and is capable of driving the first welding movable assembly (220) to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

3. The welding device according to claim 1 or 2, characterized in that: The welding device (200) comprises a welding clamp (210), and the welding clamp (210) comprises: Rack(211); A first movable arm (212) having a first welding head (2121); A first driving assembly (213) connected to the frame (211) and drivingly connected to the first moving arm (212), the first driving assembly (213) being used to drive the first moving arm (212) to move along a first direction; a second movable arm (214) having a second welding head (2141), the second welding head (2141) being arranged opposite to and spaced from the first welding head (2121) along the first direction, and being capable of cooperating with the first welding head (2121) to weld the workpiece; A second driving assembly (215) is connected to the frame (211) and is drivingly connected to the second movable arm (214); the second driving assembly (215) is used to drive the second movable arm (214) to move along the first direction.

4. The welding device according to claim 2, characterized in that: At least one welding clamp (210) is arranged to extend along the second direction, and / or at least one welding clamp (210) is arranged to extend along a fourth direction, the second direction and the third direction form a second-third plane, the fourth direction is parallel to the second-third plane, and the fourth direction is arranged at an angle to the second direction.

5. The welding device according to claim 1, characterized in that The welding equipment also includes: A loading device (400) capable of transferring the workpiece at the loading position (40) to the centering position (50), and capable of transferring the workpiece at the centering position (50) to the positioning clamping device (100) at the receiving position (10); A centering device (500) is used to center the workpiece at the centering position (50).

6. The welding device according to claim 5, characterized in that The centering device (500) comprises: The centering table includes a bearing surface, a first centering surface and a second centering surface arranged on the bearing surface, the first centering surface and the second centering surface are arranged at an angle, and a centering corner facing the ground is formed therebetween, the bearing surface and the centering corner are used to jointly bear the workpiece, wherein the centering corner is also used to align the corners of the workpiece.

7. The welding device according to claim 1, characterized in that The positioning clamping device (100) comprises: Fixed seat (110); A clamping assembly (120), connected to the fixing seat (110), and used for clamping and fixing the workpiece; The first fixed moving component (130) is transmission-connected to the fixed seat (110) and is capable of driving the fixed seat (110) to move between the material receiving position (10) and the welding position (20).

8. The welding device according to claim 7, characterized in that: The clamping assembly (120) comprises a plurality of clamping members (121), wherein the plurality of clamping members (121) together form a clamping position for clamping and fixing the workpiece, and the clamping member (121) is used to clamp the workpiece along a first direction so that the welding device (200) welds the workpiece along the first direction, and at least one of the clamping members (121) is capable of moving within a projection plane perpendicular to the first direction so as to change the size of the clamping position within the projection plane.

9. The welding device according to claim 7, characterized in that: The clamping assembly (120) comprises a plurality of clamping members (121), the clamping members (121) being used to clamp the workpiece along a first direction so that the welding device (200) welds the workpiece along the first direction, the clamping member (121) comprising a main body (1211), a fixed clamping member (1212) and a rotating clamping member (1213), the main body (1211) being connected to the fixed seat (110), the fixed clamping member (1212) being connected to an end of the main body (1211) away from the fixed seat (110), the rotating clamping member (1213) being rotatably connected to the main body (1211), and the rotating clamping member (1213) having a first position and a second position; The rotating clamping portion (1213) is configured as follows: in the first position, it is located on one side of the fixed clamping portion (1212), and the fixed clamping portion (1212) carries the workpiece along the first direction; in the second position, it rotates to be opposite to the fixed clamping portion (1212) and jointly clamps the workpiece.

10. A welding method, characterized in that: include: S1: The positioning and clamping device (100) positions and clamps the workpiece at the welding position (20), and the welding assembly welds the workpiece once at the welding position (20); S2: After the workpiece is welded once, the unloading device (300) separates the welded workpiece from the positioning and clamping device (100), and after the workpiece is separated from the positioning and clamping device (100), the positioning and clamping device (100) moves to the material receiving position (10); S3: the positioning clamping device (100) receives the unwelded workpiece at the receiving position (10), the unloading device (300) fixes the workpiece that has been welded once, and the welding assembly performs a second welding on the workpiece that has been fixed by the unloading device (300); S4: After the workpiece is welded for the second time, the unloading device (300) transfers the workpiece that has been welded for the second time to the unloading position (30), and the positioning clamping device (100) transfers the workpiece that has not been welded to the welding position (20); S5: Repeat steps S1 to S4.

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